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Conical scanning
Videos
Conical scanning is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept
Conical scanning concept. The radar beam is rotated in a small circle around the "boresight" axis, which is pointed at the target.
Conical scanning concept. The radar beam is rotated in a small circle around the "boresight" axis, which is pointed at the target.
Lobe switching
Videos
Lobe switching is a method used on early radar sets to improve tracking accuracy. It uses two slightly separated antenna elements to send the beam slightly to either side of the midline of the antenna
Conical scanning
…their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept to the earlier lobe switching concept used on some of the earliest radars, and many examples of lobe switching sets were modified in the field to conical scanning during World War…
Lobe switching concept. If both halves of the antenna are fed with the same phase shift, then a main lobe is generated with a maximum in the main dire
Lobe switching concept. If both halves of the antenna are fed with the same phase shift, then a main lobe is generated with a maximum in the main direction. The measuring using this main lobe is inaccurate. With an opposite phase feed, two large lobes are created with a sharp minimum between them. A bearing with this minimum is much more accurate.